Pump.



'F- S. GRAY & T. l. FLNAGAN.

PUMP.

APPLICATION FILED FEB. Is, 1915.

1, 177,860. Patented pr. 4, 1916.

'Unrrnn s'rn'rns Parana* erica. i

FRANKLIN S. GRAY AND THOMAS J. FLANAGAN, OF TULSA, OKLAHOMA..

PUMP.

Application filed February 18, 1915.

' I To all whom it may concern: Y

. ..`Be it known that we, 'FRANKLIN S. GRAY -an'd THOMAS J. FLANAGAN,citizens of the vUnited States, residing at Tulsa, in the county ofTulsa and State of Oklahoma, have invented certain new and usefulimprovements in Pumps, of which the following is a. specification,reference being had therein to the accompanying drawing.

The present invention relates to improvements in pumps, particularly theclass known as double-acting piston operating pumps, the object being toprovide a construction embodying the use of a minimum number of partsand the assembling of these parts in a very compact form.

A further object of the present invention is the construction of a pumphaving a body proper composed of a single casing provided with acylinder, and a series of inlet and outlet ducts or ports arrangedwithin the casing and in communication with the cylinder.

A still further object of the invention 'con- `sists inthe arrangementof an inlet andoutlet port at each end of the pump body, these ports attheir outer ends being provided Vwith suction controlled inlet andoutlet valves and having all these valves mounted in the top of the pumpbody and opening upon the outside of the casing. Ve also arrange thesevalves in the same horizontal plane whereby access to all the valves canbe had, when it is desired to grind or replace the same, by the removalof a valve .cover mounted on top of the casing and 'i adapted te incloseall valves.

Our invention also comprehends the use to inclose the inlet and outletvalves, the cover being provided in its under face with a series ofpockets overlying the valves and spaced apart by means of division wallswhich have a. water-tight connection with the top of the body, thepockets forming .reservoirs for the fluid during the operation of thepiston whereby a continuous stream passes through the discharge ducts fin view Vof the fact that the ports leading to the reservoirs or pocketsare of greater capacity than the discharge ducts leading from thepockets, which allows an accumulation of a small amount of fluid in thepockets between the strokes of the piston so that the stream dischargedfrom the pump is at all times Constant Without objectionielle baskpressure# A Specification of Letters Patent.

L The-invention also embraces the particu` lar construction of endplates for the bore 'in the casting constituting thecylinder,

:which plates are outwardly bowed and so constructed and attached to thecylinder as to be interchangeable from one side of the bore to theother.

Referring to the drawings: Figure l, is a vertical sectional elevationof a pump constructed in accordance Ywith our invention. Fig. 2, is aplan view of the same with the cover plate removed, and Fig. 3, is avertical cross section through thel body portion thereof.

v With reference to the drawings wherein` piston 5, which is of theordinary con'struction and is yreciprocated by the piston rod 6 in anydesired manner. The bore of the Acylinder is closed at each end byinclosingV plates 7 and 8; these plates being outwardly vbowedintermediate `their ends to provide `passages 9 and 10 between the endsof the cylinder and the plates, the purpose of which willlbe hereinafterdescribed. In order to prevent any leakage 4of the fluid through theplates 7 and 8 during the operation of the pump, wel provide packingfrings 11 and 12 of felt or any other suitable material between the endsof the pump body and the' inclosing plates. Screws 13 and lll are shownas the means for retaining these plates in position, but it will bereadily seen that any other suitable fasteners may be used. The Vplate 8is provided with an apv erture 15 Vforfthe passage of the piston rod .6and is also provided with'an exterior carry a suitable rod packing 17held in place by a cap 19.

s 1n the lower portion of the. pump bodyy intermediate its ends is a.fluid inlet port 20,

this port extending a slight distance within Y the body at right anglesto the cylinder and at its end Vprovided with a pair of feeding ports orducts 21 and 22. These ducts or -ports extend (upwardly through the bodyincline .tevae their frein. where flange 16 extending around theVaperture to they lead in a direction atright angles to the upwardlyextending portions 21 and 22, as indicated by the numerals 23 and 23',to the top of the casing, as shown in Fig. l. The object of forming theports with these curvatures is to enable the ducts or ports to lead tothe feeding valves which are directly over the cylinder and at the sametime allow the upwardly extending portion of the port to. be positionedon one side of the cylinder.

Arranged in the head of the pump body orcasing and positioned in theoutlet portions of the feeding ducts or ports are inlet valve supportingmembers 24 and 25 adapted to have a screw threaded connection with thefeeding ports land supporting the inlet valves 26 and 27 of the usualconstruction and actuated by the suction caused when the piston isreciprocated. These inlet valves are placed intermediate the outletvalves 28 and 29 supported in outlet ducts 3() and 3l bythe valvesupporting members 32 and 33, the inlet and outlet valves all beingarranged in the same horizontal plane and all opening exterior of thetop of the pump body or casing.

Arranged on each side of the inlet valves are the feeding passages 34and l35 leading downwardly through the body and communicating with theports 36 and 37, which ports are positioned above and are parallel withthe cylinder establishing communication between the inlet and outletvalves and the cylinder. through the passages 9 and 10 formed by thebowing of the inclosing plates 7 and 8. Discharge ducts 38 and 39 intheJ top of the pump body arranged on one Side of the outlet valves 28and 29, are provided to carry the fluid to the main discharge port 40.These discharge ducts lead a slight distance downwardly through the bodyand then upwardly with the cylinder joining intermediate the ends of theblock with the discharge port 40. The port 40 is of greater diameterthan the discharge ducts and is positioned in the pump body opposite theinlet port.

A cover 41 adapted to overlie the valves and the inlet and dischargeYducts is provided in its under face with a series of horizontallyarranged pockets 42 separated by the spacing posts 43. The spacing posts43 carry suitablepacking 44, thereby forming water-tight pocketspreventing any leakage of the fluid held in these pockets during theoperation of the pump. The top is preferably held in place by a seriesof screws 45 passing through the spacing posts and into engagement withthe top of the pump body or casing. The provision of the water pocketsover the valves and the inlet and outlet ducts 34, 35, 38 and 39,respectively, enables the pump to maintain a constant discharge streamin view of the fact that the outlet ports 30 and 31 are of `greaterdiameter than the discharge ports 3S and 39 which allows a small amountof liquid toV accumulate in the pockets during the operation of the pumpso that between the strokes of the piston the liquid which isaccumulated in the pockets will then discharge through the dischargeducts thereby maintaining the discharge stream constant at all timesduring the operation of the pumps.

The arrangement being as'described, the operation of the pump is asfollows. With the piston moving fromleft to right the suction createdbehind the piston will cause the closing of the valve 28y and theopening of: 80

the valve 26 thereby'allowing the water to pass into the pocket 42 andthroughY ports 34 and 36 into the space kbehind the piston. At the sametime the waterin front of the piston will be forcednthrough thepassage.VV

37, a small amount ofthe fluid passing through port 35 into pocket 42closing the valve 27, the remainder of the charge going f into the port31 through the valve 29 and into pocket 42 from where it is carried awayy l by the discharge duct I39 to the discharge outlet. From theoperation it will be readily seen that we haveiprovided ra pump havingan inlet and outlet valve at each end of theV pump body or ycasing andwhen the inlet valve on one side of the `casing isin operation theoutletv valve is closed at the same time the outlet valve on the`opposite side of the casing is open and the inlet valve closed.

Many modifications in structure and uarrangement of parts are of coursepossible,`

hence we do not desire to be limited to the precise structure land'arrangement herein:

described.

wWe claim 1. A pump comprising` a body composed of a casting havingv acentral bore therein constituting a cylinderfa piston within the ccylinder, the said casting having a bifui 1m-` cated port leading fromthe bottom'thereof,

upwardly through the body, and then exf tending in a direction at' rightangles to the upwardly extending part to the top of the casting, a pairof outlet ports inthe body extending downwardly therethrough` and icommunicating with the cylinder, all ofrsad ports being arranged'atrsubstantially the center of the casting and inthe same hori- Zontalplane, and a seriesof suctionconi trolling valves arrangedy at `theouter portion o'f each port.

2. A pump comprising a body composed l scribed.

3. A pump comprising a body composed of a single casting having acentral bore therein, constituting a cylinder, the casting having inletports extending upwardly from the bottom thereof intermediate its endsand then in the direction at right angles to the upwardly extendingportions to the top of the body, and a pair of outlet ports arranged inthe body and leading downwardly therethrough and communicating with thecylinder, all of said ports being located at substantially the center ofthe body and being controlled by suction actuated valves, the said bodynear one side thereof having relatively small discharge ducts leadingtherethrough to a main discharge port arranged in the center of thebody, substantially as described.

In testimony whereof we hereunto affix our signatures in the presence oftwo witnesses.

FRANKLIN S. GRAY. THOMAS J. FLANAGAN.

Witnesses:

L. D. ARMSTRONG, J. E. WINGER.

Copies of this patent may be obtained for vevcents each, by addressingthe Commissioner of Patents, Washington, D. C.

